石油钻具接头螺纹尺寸
螺距 p
每25.4mm 牙数
螺纹 基面中径,C
外螺纹外螺纹圆外螺纹锥外螺纹锥内螺纹最内螺纹锥锥部大柱部分直部小端直部总长度 小有效长部长度
径 径 度 端直径
LPC 0- LBC+9.5
DL+0.8
LBr DLF±0.4 DS+0.8-0.4
-0.4 --3.2 --0
内螺纹扩
锥孔大端直径 QC+0.8 -0.4 66.7 74.6 87.7 96.8 103.6 110.3 119.1 124.6 134.9 150.8 165.1 187.3 204.8 68.3 77.8 90.5 119.1 141.7 154.0 180.2 204.4 102.8 110.3 123.8 150.0 173.8 74.6 87.8 103.6 124.6 134.9 163.9
螺纹 类型 螺纹 牙型
锥度
数 字 型(NC)
NC23 NC26 NC31 NC35 NC38 NC40 NC44 NC46 NC50 NC56 NC61 NC70 NC77
23/8REG
V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R V-0.038R 2A1(0) 231(0) 331(0) 431(0) 531(0) 631(0) 731(0) 831(0) 321(0) 4A1(0) 421(0) 521(0) 621(0) 2A1(0) 211(0) 311(0) 4A1(0) 411(0) 511(0)
6.35 6.35 6.35 6.35 6.35 6.35 6.35 6.35 6.35 6.35 6.35 6.35 6.35 5.08 5.08 5.08 5.08 6.35 6.35 6.35 6.35 5.08 6.35 5.08 6.35 6.35 6.35 6.35 6.35 6.35 6.35 6.35
4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 4 4 4 4 5 4 5 4 4 4 4 4 4 4 4
1:6 1:6 1:6 1:6 1:6 1:6 1:6 1:6 1:6 1:4 1:4 1:4 1:4 1:4 1:4 1:4 1:4 1:4 1:6 1:4 1:4 1:4 1:6 1:4 1:6 1:6 1:6 1:6 1:6 1:6 1:6 1:6
59.817 67.767 80.848 89.667 96.723 103.429 112.192 117.50 128.059 142.646 156.921 178.146 196.621 60.080 69.605 82.293 110.868 132.944 146.248 170.549 194.731 94.844 103.429 115.113 142.011 165.598 67.767 80.848 96.723 117.50 128.059 157.201
65.10 73.05 86.131 94.971 102.01 108.71 117.48 122.78 133.35 149.25 163.53 185.75 203.2 66.675 76.200 88.900 117.47 140.20 152.19 177.80 201.98 101.44 108.71 121.72 147.96 171.53 73.05 86.13 102.01 122.78 133.35 162.48
61.90 69.85 82..96 92.06 98.83 105.6 114.27 119.61 130.43 144.86 159.16 181.38 198.8 63.9 73.4 86.1 114.7 137.4 149.40 175.01 199.14 — 105.6 — — — 69.9 83.0 98.8 119.6 130.4 —
52.4 60.35 71.323 79.096 85.065 89.662 98.425 103.734 114.30 117.50 128.60 147.650 161.95 47.625 53.975 65.075 90.475 110.058 131.039 144.475 167.843 77.622 89.662 96.317 126.797 150.368 60.350 71.323 85.065 103.734 114.300 141.326
76.2 76.2 88.9 95.2 101.6 114.3 114.3 114.3 114.3 127.0 139.7 152.4 165.1 76.2 88.9 95.2 107.9 120.6 127.0 133.3 136.5 95.2 114.3 101.6 127.0 127.0 76.2 88.9 101.6 114.3 114.3 127.0
79.4 79.4 92.1 98.4 104.8 117.5 117.5 117.5 117.5 130.2 142.9 155.6 168.3 79.4 92.1 98.4 111.1 123.8 130.2 136.6 139.7 98.4 117.5 104.8 130.2 130.2 79.4 92.1 104.8 117.5 117.5 130.2
92.1 92.1 104.8 111.1 117.5 130.2 130.2 130.2 130.2 142.9 155.6 168.3 181.0 92.1 104.8 111.1 123.8 136.5 142.9 142.9 152.4 111.1 130.2 117.5 142.9 142.9 92.1 104.8 117.5 130.2 130.2 142.9
正 规 型(REG)
2/8 3/2 4/2 5/2 6/8 7/8 8/8
31/2FH
贯 眼 型(FH)
4 4/2 5/2 6/8
23/8IF
内 平 型(IF)
2/8 3/2 4 4/2 5/2
现采用数字型接头牙型V=0.038R可与相同中径的贯眼,内平型互换:1)NC26与23/8IF(2A11×2A10),2)NC31与27/8IF(211×210), 3)NC38与31/2IF(311×310),4) NC40与4FH, 5)NC46与4IF(4A11×4A10) 6)NC50与41/2IF(411×410).
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